Standard Part MB 2 DIN 5406 Lock Washer

Description

This MB 2 lock washer is a standard industrial component manufactured according to DIN 5406 specifications. It is an essential part for securing bearing lock nuts (type KM 2 or AN 02) on shafts with a 15mm diameter. The washer's design, featuring one inner tab and multiple outer tabs, provides a reliable mechanical lock to prevent the nut from loosening under vibration, ensuring the integrity and safety of the entire bearing assembly.

Specifications

• Type: Lock Washer
• Standard: DIN 5406
• Size Code: MB 2
• For Shaft Diameter: 15 mm
• Inner Diameter (d1): 15 mm
• Outer Diameter (d2): 28 mm
• Thickness (s): 1.0 mm
• Material: Steel

Application

Used extensively in mechanical and automotive engineering to secure bearings on shafts. It is a critical component in gearboxes, electric motors, pumps, and conveyor systems where rotational forces and vibration are present.

Country of Origin

This component is typically manufactured in Germany, adhering to high-quality DIN standards.

CO2 Impact

By choosing this reused industrial component, you contribute to a more sustainable circular economy, saving 0.006 kg of CO2 compared to a new production. This saving might seem small, but every part counts towards a greener future.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

What lock nut is compatible with the MB 2 washer?
The MB 2 lock washer is designed to be used with a KM 2 (DIN 981) or AN 02 lock nut.

How do you properly install a DIN 5406 lock washer?
First, slide the washer onto the shaft, ensuring the inner tab engages with the shaft's keyway. Then, tighten the corresponding lock nut against the bearing. Finally, identify the washer tab that aligns with one of the slots on the lock nut's outer circumference and bend it firmly into the slot to prevent rotation.

What is the material of this MB 2 washer and is it suitable for corrosive environments?
This washer is typically made from standard spring steel with a phosphated or black oxide finish for basic corrosion resistance. For highly corrosive or wet environments, it is recommended to use a stainless steel (INOX) version of the MB 2 washer.

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Last Update: Friday, March 13, 2026